JPH0323265U - - Google Patents

Description

Translated fromJapanese

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例の開弁状態を示す縦
断面図、第２図は同実施例のハウジングの斜視図
、第３図はリングの常温時と高温時との形状を示
す平面図、第４図は弁座の別の実施例を示す縦断
面図、第５図は本考案の別の実施例の開弁状態を
示す縦断面図、第６図は同実施例のハウジングの
斜視図、第７図は従来例の開弁状態を示す縦断面
図である。 １……緊急遮断弁、２，３……管路、４……流
路、５……弁体、６……弁座、７……弁孔、８…
…ケーシング、９……フタ、１０……ハウジング
、１１……スリツト、１２……収納孔、１３……
リング、１４……受け座、１５……コイルバネ、
１６……弁座輪、２０……内蓋、２１……外蓋、
２２……パツキン、２３……ナツト、３０……弁
体、３１……流路、３２……縦孔、３３……支持
部材、３４……球弁。 Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention in the valve open state, Fig. 2 is a perspective view of the housing of the embodiment, and Fig. 3 is a plan view showing the shape of the ring at room temperature and at high temperature. Fig. 4 is a longitudinal sectional view showing another embodiment of the valve seat, Fig. 5 is a longitudinal sectional view showing another embodiment of the present invention in the valve open state, and Fig. 6 is a longitudinal sectional view of the housing of the same embodiment. The perspective view and FIG. 7 are longitudinal cross-sectional views showing the valve open state of the conventional example. 1...Emergency shutoff valve, 2, 3...Pipeline, 4...Flow path, 5...Valve body, 6...Valve seat, 7...Valve hole, 8...
...Casing, 9...Lid, 10...Housing, 11...Slit, 12...Storage hole, 13...
Ring, 14... Strike seat, 15... Coil spring,
16...Valve seat ring, 20...Inner cover, 21...Outer cover,
22... Packing, 23... Nut, 30... Valve body, 31... Channel, 32... Vertical hole, 33... Support member, 34... Ball valve.

Claims (1)

Translated fromJapanese

【実用新案登録請求の範囲】(1) 弁座の上方に弁体を配置し、弁座と弁体と
の間に熱変形素材によつて形成した開閉手段を介
在させ、該開閉手段は常温時には弁体を弁座の上
方に保持し高温時には弁体の弁座への落下を許容
するように熱変形する緊急遮断弁。(2) 弁座に対向して弁体を配置し、該弁体を弁
座方向に付勢する付勢手段を設け、弁座と弁体と
の間に熱変形素材によつて形成した開閉手段を介
在させ、該開閉手段は常温時には前記付勢手段に
抗して弁体を弁座より離隔した位置に保持し高温
時には弁体の弁座への着座を許容するように熱変
形する緊急遮断弁。(3) 前記弁体は球形に形成され、前記付勢手段
は弁体の背後に配した圧縮スプリングによつて形
成され、前記開閉手段は形状記憶合金よりなり且
つ円周の一箇所を切り欠いたリングによつて形成
され、該リングの最小径は常温時には前記球形の
直径よりも狭く高温時には前記球形の直径よりも
広くなるように熱変形する請求項２記載の緊急遮
断弁。[Claims for Utility Model Registration] (1) A valve body is disposed above the valve seat, and an opening/closing means formed of a thermally deformable material is interposed between the valve seat and the valve body, and the opening/closing means is kept at room temperature. An emergency shutoff valve that sometimes holds the valve body above the valve seat and deforms thermally to allow the valve body to fall onto the valve seat at high temperatures. (2) An opening/closing system in which a valve body is arranged opposite to a valve seat, a biasing means is provided to bias the valve body toward the valve seat, and a thermally deformable material is formed between the valve seat and the valve body. The opening/closing means is capable of thermally deforming to hold the valve body in a position separated from the valve seat against the urging means at normal temperatures and to allow the valve body to seat on the valve seat at high temperatures. Shutoff valve. (3) The valve body is formed into a spherical shape, the biasing means is formed by a compression spring arranged behind the valve body, and the opening/closing means is made of a shape memory alloy and has a notch at one point on the circumference. 3. The emergency shutoff valve according to claim 2, wherein the emergency shutoff valve is thermally deformed so that the minimum diameter of the ring is narrower than the diameter of the spherical shape at normal temperatures and becomes wider than the diameter of the spherical shape at high temperatures.